October 8th 2021

From Hall A Wiki
Revision as of 10:37, 8 October 2021 by Camsonne (Talk | contribs)

Jump to: navigation, search
  • Updates
    • HCal
      • LED working mostly way wanted, when using output bit, bit3 behavior different than bit 0 - disable after prestart did not work with bit 3 -
      • switched to DVCS pulser for LED
      • need adjust the latency of HCAL with TS
      • will try to reduce window to 150 ns
      • combined run : only use TS prescale, need to send LED and other trigger to TS to be able to enable/prescale LED, and cosmics paddle
    • coincidence trigger
      • BB trigger and EDTM in F1, seems working
      • aligned for coincidence and singles after coinc 50 ns
    • Bigbite Shower
    • Hodoscope
    • GRINCH
    • CDet
    • LHRS
    • GEM Bigbite INFN
    • UVA clean room
    • Helicity
    • Beamline/scalers
    • HV


  • On going tasks
    • Cable to weldment ( David / Heidi 100%? )
    • cabling scaler/beamline crate ( David , Bob 100%)
    • HRS to TS and timing ( Bob, Maria 50% ) - programmed high threshold for other detectors -
    • software for FADC pedestals : Bryan will give to Brad
    • EPICS / start End of run logging script (Bob 100%) - just need to add configuration - will make a test configuration
    • Prescale GUI (Bob 100%)
    • script check MPD sync ( Ben , Andrew 20%) - code to unpack information already written - need run with those data - timestamp need some work
    • RF (Bob ,Maria 90%) - located RF prescaler and signal - need to send to HRS and SBS weldment - in hodoscope TDC - looking for new RF board
    • sync check scripts ( Andrew , Alex 0%)
    • EDTM at least 1 Hz for helicity ( Scott, Arun, Mark ? 80 % ?) Just need to check it is working : look for 10 Hz EDTM - need to put in TDC too - need help set up library in hodoscope crate - will plug it back and use Scott GUI
    • Hodoscope v1190 clock ( Alex , Mark , Ralph) - done
      • check if calibration is needed after switch (Rachel,Mark 50% ?)- to do but should not be much - check with Ben if he as software -
    • Full configration all crates ( Bryan - 90% ) - can attach process to components - just finish CODA config - need add sbsve29
    • need setup screens for online display and analysis, Hall A tools on big screen - can make a map file - (Bryan , done )
    • data rate test with new computer and 2 VTPs ( Alex, Bryan ) -
    • test GEM zero supression ( Sean, Holly )- done
    • FIR ( Sean , Ben , 20 % ? ) Not working
    • GEM cosmics ( Sean, Holly ) 70 %
    • Shower cosmics (Arun, Provokar ) 90 % ?
    • HCAL cosmics (Scott) - investigating the issue - most channel working - ~ 80%
    • GRINCH cosmics ( Bradley ) - need 3 more runs x 8 - 4 FADC - only 64 out of 550 -
    • Hodoscope cosmics ( Ralph ) - calibration TDC and nino thresholds : looks pretty good - just need to look at FADC - upper third, 2 left - 60%
    • DAQ documentation ( Alex, Rachel ,Don) ( 80 % resets, need starting CODA 50 % / troubleshoooting 0% )
    • suggest taking all detectors cosmics every night - took a few runs !
    • add scaler crate to full config ( Alex, Steve, Paul - 50 %) - working stand alone - TI error with TS
    • coincidence trigger (done ) - need fine tune inputs at TS
    • BB CAL and HCAL at TS - delayed after coincidence (Mark, done ) - need the RC box for FADC ref channel - need delay single triggers (Mark , done 15 ns ) - add GRINCH LED (done #5) - Test coincidence delay ( Alex, Mark, Bryan 0%)
    • reference channel to all crates - need HCal and Shower + RF
    • add FADCs for shower sum and HODO ( David / Mark /Bryan : done )
    • add FADCs for GRINCH (Bryan/Alex) - done
    • read threshold for discriminator from with RPi be Ellen (done) (noise issue was fixed), need give code to Steve ( done ) - could add in logentry or wiki for adding in other scripts ( check with Steve ) - Scott wanted to add those readback in GUI
    • scaler gating with TS (Alex, Steve) done ? , need include code in readout list - Steve looking at adding to TS list (done)
    • MPD crates on hareboot6 (done) - can be power cycled remotely
    • put UVA GEM LV on reboot switch (done)
    • (new) Trigger latch TS to TDC ( Alex,Mark 0%) try F1 ? or add vetroc gem crate - or hodoscope )
    • event type decoding in analyzer - ( mention at analysis meeting )
    • MPD retiming (?) with V1495 ( done )
    • GEN RP
      • setup on halladev
      • setup VTP
      • GEM, FADC pedestal configuration (Alex)
      • Spot ++ and replay beamline sbsvme29 (David)
      • clean up CODA configuration (Alex, Bryan)
      • documentation
      • scripts for threshold scan
      • Possible new tasks
        • rcdb
        • check latency with DiagGui
        • User event inserted at each split with timestamp, spectrometer information
        • mysql database
        • autoanalysis at end of run
  • Issues
    • transceiver issues : HCAL TI might be suspicious ROC 17 ( Scott replaced two transceiver but need to test might be bad connection )
      • 1 out of 4 HRS run with TS, if reboot TS usually fixes it - (fixed after firmware downgrade )
    • network issue : one short fiber replaced, will try to put in protective tube (fixed)
    • LHRS TI : working now ( no issues seen so far )
    • GEM with TS hanging - real MPD out of sync - fixed with new firmware - (fixed : 5.2 KHz bufferlevel 5)
    • Shower FADC bad channel - FADC replaced but problem could not be reproduce - need to test more ( on going - low priority ) - FADC in test lab - DAQ setup - need to feed signal
    • HCAL FADC bad channel - repaired by Bill - jumper wiggled loose - if no pedestal - could be this jumper (fixed)
    • HCAL ROC16 fiber - will double check if fiber 5 enabled - use slave5 - added additionnal fiber for ROC16 - (fixed) by cleaning
    • warning PEB ROC - Bryan checking with Dave - might incorrect flag - not sure why - but data still in sync since only happens - still happening - not sure if it is an issue
    • Shower F1 issue at high rate - need to check with OT#2 - check at sync event implemented - DMA error might come from multiple pulsing - switched to 1190 (fixed) -
    • Helicity scaler readout : issues working with same DMA configuration - scalers doing regular VME (fixed)
    • need copy of L1A for helicity scaler - can send TI output ? counting L1A between helicity event to track sync -done
    • Full config still hanging on LHRS and HCAL busy : no hanging buffer level 2 - need more testing high rate - (fixed after firmware downgrade)
    • use HV EPICS : type go_hv on aslow on adaqsc , need people to check if it works and if mapping is correct - bug with off button - hodoscope channel turning off
      • control system studio try self update and NFS down
      • EPICS server need to be started at boot, Ole and Bryan - ? ( rebooted crate , working now ? )
    • can put documentation for other control
    • (new) ROC17 F1 data - data left at sync event - seems fixed after fixing busy cabling - still see a few with high random rate ( tweak trigger rule and gate width ? Is it an issue ? )
    • (new) hodoscope no data in some events - seems fixed after putting busy from distribution board
    • (new) HCAL ROC17 crash / shutdown ( fixed after replacing CPU )
    • (new) V1190 stuck at prestart - went away after switch to external clock - maybe bad connection ( Bryan took out readback loop - not hang - maybe check parameters are correct)
    • (new) deadtime ROC17 HCAL ( bad CPU connected at 100 Mbps - maybe fixed need test)
    • (new) deadtime ROC5 hodoscope ( need to test - issue with busy fixed )
    • (new) near limit for FADC crates - Shower window was divided by 2 - HCal windows - could do 150 ns - Move FADCs to top crate ?
    • (new) CODA database corruption - make sure to release components when run is stopped
    • (new) one night with bad latency ( was an ECL cable inverted somewhere ) GEM estimated about -200 ns shift + 140 ns today
    • (new, sort of) HV hodoscope channels turning off
    • (new) Glasgow colleague IP maybe black listed
    • (new) if you try to edit wiki from frame of GMn website, it does not work, need to open the wiki in a new browser window to log into wiki
    • (new) sbsvme29 TI error with GMN1 config
    • (new) Raster X1 vs Raster X2 anticorrelation
    • GEN RP
      • need 4 more Optical to VXS ( Ben )
      • need 160 lemo - large order delay - new order in high priority - can use internal trigger for now so only need 80 for preliminary testing - do we have enough distribution boxes ?
      • (new) setup network port for UVA chamber testing in EEL 125
      • Ben's retiming - need 1 V1495
  • Hall was cleaned - fibers left and table left
  • Helicity board : 2 avalaible
  • F1 : need to test high rate
  • could increase threshold - window width 1000 ns maybe - need to be optimized - 40 ns - no remote threshold right now - on camac - might be able to control

288 channels = 18 NIM modules

Retrieved from "https://hallaweb.jlab.org/wiki/index.php?title=October_8th_2021&oldid=42386"